The folowing table expresses '85' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
| Base | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
|---|---|---|---|---|---|---|---|
| 2 | 1010101 | 100 | 1 | ||||
| 3 | 10011 | 10 | 1 | ||||
| 4 | 1111 | 10 | 1 | ||||
| 5 | 320 | 10 | 1 | ||||
| 6 | 221 | 5 | |||||
| 7 | 151 | 10 | 1 | ||||
| 8 | 125 | 10 | 1 | ||||
| 9 | 104 | 5 | |||||
| 10 | 85,13 | 4 | |||||
| 11 | 78,14 | 5 | |||||
| 12 | 71 | 8 | |||||
| 13 | 67,10 | 1 | |||||
| 14 | 61 | 7 | |||||
| 15 | 5A,10 | 1 | |||||
| 16 | 55 | A |
Factors: 5 * 17
85 is in the Pythagorean Triples: (13, 84, 85), (36, 77, 85), (85, 132, 157), (85, 3612, 3613).
85 is the atomic weight of Astatine (At).